refactoring

examples/testbed/framework/cloth_dragger.h

@@ -0,0 +1,70 @@
+/*
+* Copyright (c) 2016-2016 Irlan Robson http://www.irlan.net
+*
+* This software is provided 'as-is', without any express or implied
+* warranty.  In no event will the authors be held liable for any damages
+* arising from the use of this software.
+* Permission is granted to anyone to use this software for any purpose,
+* including commercial applications, and to alter it and redistribute it
+* freely, subject to the following restrictions:
+* 1. The origin of this software must not be misrepresented; you must not
+* claim that you wrote the original software. If you use this software
+* in a product, an acknowledgment in the product documentation would be
+* appreciated but is not required.
+* 2. Altered source versions must be plainly marked as such, and must not be
+* misrepresented as being the original software.
+* 3. This notice may not be removed or altered from any source distribution.
+*/
+
+#ifndef B3_CLOTH_DRAGGER_H
+#define B3_CLOTH_DRAGGER_H
+
+#include <bounce/common/geometry.h>
+#include <bounce/cloth/cloth.h>
+#include <bounce/cloth/cloth_mesh.h>
+#include <bounce/cloth/particle.h>
+#include <bounce/cloth/spring_force.h>
+
+// A cloth triangle dragger.
+class b3ClothDragger
+{
+public:
+	b3ClothDragger(b3Ray3* ray, b3Cloth* cloth);
+	~b3ClothDragger();
+
+	bool IsDragging() const;
+
+	bool StartDragging();
+
+	void Drag();
+
+	void StopDragging();
+
+	b3Vec3 GetPointA() const;
+
+	b3Vec3 GetPointB() const;
+private:
+	b3Ray3* m_ray;
+	float32 m_x;
+
+	b3Cloth* m_cloth;
+	const b3ClothMesh* m_mesh;
+	b3ClothMeshTriangle* m_triangle;
+	float32 m_u, m_v;
+
+	bool m_spring;
+
+	b3Particle* m_particle;
+	b3SpringForce* m_s1;
+	b3SpringForce* m_s2;
+	b3SpringForce* m_s3;
+
+	b3ParticleType m_t1, m_t2, m_t3;
+};
+
+inline bool b3ClothDragger::IsDragging() const
+{
+	return m_triangle != nullptr;
+}
+
+#endif